Medicaid's Five Core Eligibility Categories: A Reference Guide

How Medicaid Eligibility Is Structured

Medicaid is not a single program with one set of rules. It is a joint federal-state program that covers specific categories of people — not simply anyone below a certain income. Understanding which category you or a family member fits into is the first step in determining eligibility, because each category carries its own income thresholds, asset rules, and residency requirements.

Federal law establishes the mandatory minimum categories that every state must cover. Beyond those minimums, states have broad discretion to expand coverage, raise income limits, or add optional groups. This is why eligibility can differ dramatically depending on where you live. For a deeper explanation of that variation, see why Medicaid rules differ so dramatically by state.

This reference guide focuses on the five core eligibility categories you will encounter in virtually every state: children, pregnant women, adults (non-disabled, non-elderly), elderly individuals, and people with disabilities. For each category, you will find the federal baseline, typical income benchmarks, and key variations to watch for.

Before reading further, it helps to know how Medicaid measures income. Most non-elderly, non-disabled applicants are evaluated using MAGI-based rules introduced by the Affordable Care Act. Elderly and disabled applicants are generally evaluated under older, pre-ACA methodologies that consider both income and assets. If you are unfamiliar with these terms, the Medicaid eligibility terms reference is a good starting point.

Category 1: Children

Children are Medicaid's largest covered group by enrollment. Federal law requires states to cover children in families with incomes up to 138% of the Federal Poverty Level (FPL), though the vast majority of states cover children at significantly higher thresholds — many reaching 200%, 250%, or even 300% FPL through a combination of Medicaid and the Children's Health Insurance Program (CHIP).

Age Range

Coverage for children generally extends from birth through age 18. Some states extend coverage to age 19. Infants — children under age 1 — often receive enhanced protection: in most states, a newborn born to a mother enrolled in Medicaid is automatically enrolled from birth through at least the first year of life, regardless of the family's ongoing eligibility status.

Income Standard

Children's eligibility is calculated using MAGI-based household income. The income of both parents (or a single parent) is counted. States set their own upper income limits, so a child who does not qualify for Medicaid may still qualify for CHIP at a higher income tier. For a full side-by-side comparison of how these two programs interact, see Medicaid vs. CHIP: coverage for children and families.

Key State Variation

• Upper income limits for children range from 138% FPL (minimum) to over 300% FPL in some states.
• Some states cover children regardless of immigration status; others restrict coverage to citizens and qualified immigrants.
• Foster care children and former foster youth have special federal protections extending coverage in all states.

Category 2: Pregnant Women

Medicaid coverage for pregnant women is both a public health imperative and a federally protected category. States must cover pregnant women with household incomes up to 138% FPL, and most states have elected to go higher. As of recent years, the median state income limit for this group sits around 200% FPL, with several states covering up to 250% or 300% FPL.

Scope of Coverage

Coverage for pregnant women includes all pregnancy-related services — prenatal care, labor and delivery, and postpartum care — as well as services for conditions that may complicate the pregnancy. Critically, the coverage is continuous for the duration of the pregnancy and extends through a postpartum period.

Postpartum Extension Under the ACA and ARPA

Historically, Medicaid coverage for new mothers ended 60 days after birth. The American Rescue Plan Act of 2021 gave states a permanent option to extend postpartum coverage to 12 months. As of 2024, the majority of states have adopted this extension, though not all. Check your state's Medicaid agency to confirm the current postpartum coverage period.

Key State Variation

• Income limits range from 138% to 300%+ FPL depending on the state.
• Some states provide pregnancy-related coverage to otherwise-ineligible immigrants through a separate federally funded pathway.
• Postpartum duration varies: 60 days in states that have not adopted the 12-month extension, up to 12 months in those that have.

The ACA's broader influence on Medicaid eligibility — including how it standardized income rules for pregnant women — is covered in detail in The ACA's role in reshaping Medicaid eligibility.

Category 3: Adults (Non-Disabled, Non-Elderly)

Prior to the ACA, non-disabled, non-elderly adults without dependent children had virtually no pathway to Medicaid in most states, regardless of income. The ACA's Medicaid expansion changed this fundamentally by creating a new mandatory category for adults aged 19–64 with incomes up to 138% FPL — but only in states that chose to adopt the expansion.

Expansion vs. Non-Expansion States

As of 2024, 40 states and the District of Columbia have adopted Medicaid expansion. The remaining 10 states have not. In non-expansion states, low-income adults without dependent children may fall into the coverage gap — earning too much for traditional Medicaid but not enough to qualify for Marketplace subsidies, which begin at 100% FPL.

For those in non-expansion states who do qualify (typically parents with dependent children), income limits are often extremely low — sometimes as low as 18–30% FPL. This is a sharp contrast to the 138% FPL standard in expansion states.

Income Standard

In expansion states, MAGI-based income is used. The 138% FPL threshold (which actually represents 133% FPL plus a 5% income disregard built into the ACA) applies to the individual or household depending on filing unit rules.

Key State Variation

• Non-expansion states may offer coverage only to parents with dependent children, at very low income thresholds.
• Some states have implemented work requirements for this group, though federal courts have repeatedly blocked blanket implementation.
• Expansion states must provide the full Medicaid benefit package to this group, not a limited package.

For a comprehensive breakdown of how state choices affect all categories, including adults, review state-specific income limits by Medicaid eligibility category.

Categories 4 & 5: Elderly and People with Disabilities

Elderly individuals (generally age 65 and older) and people with disabilities are evaluated under different — and often more complex — rules than the MAGI-based categories above. These groups predate the ACA and continue to be governed largely by pre-ACA eligibility methodology, which means both income and assets are considered in the eligibility determination.

Category 4: Elderly Individuals (Age 65+)

States must cover elderly individuals who receive Supplemental Security Income (SSI), and most states also cover elderly individuals who meet Medicaid's own income and asset tests. The standard income limit for this group is typically set at 100% FPL or slightly above, though states can set higher limits for certain services such as home- and community-based care.

Asset limits apply to elderly applicants: typically $2,000 for an individual and $3,000 for a couple, though these vary by state. Certain assets are excluded, including a primary residence (subject to equity limits), one vehicle, and personal property.

Elderly individuals who qualify for both Medicare and Medicaid are known as dual eligibles. Medicaid can pay Medicare premiums, cost-sharing, and cover services Medicare does not, such as long-term care.

Category 5: People with Disabilities

Medicaid coverage for people with disabilities is closely tied to SSI eligibility in most states. Individuals who receive SSI are automatically enrolled in Medicaid in the majority of states. For those who do not receive SSI but have a qualifying disability, states apply disability determinations and separate income/asset rules.

This category also includes people who receive home- and community-based services (HCBS) waiver programs, which allow individuals to receive long-term care services at home rather than in an institution. Waiver eligibility rules vary significantly and often involve waiting lists.

Spend-Down Provisions

Some states allow elderly or disabled individuals with incomes above the Medicaid limit to qualify through a spend-down — essentially paying out-of-pocket medical expenses until their countable income drops to the eligibility threshold. This functions similarly to a deductible and is a critical pathway for individuals with high medical costs.

Key State Variation for These Two Groups

• Asset limits differ by state; some states have eliminated asset tests for certain populations.
• Spend-down availability is not universal — only about half of states have medically needy programs that allow spend-down.
• HCBS waiver programs vary enormously in scope, eligibility, and wait times.
• Some states use an SSI-linked standard (called "§1634 states"); others apply their own criteria.

For a full overview of all five categories in context and how the overall program is structured, see Medicaid eligibility explained: who qualifies and how the program works.

Using This Reference: Next Steps

Identifying which category you or a family member falls into is the gateway to understanding whether Medicaid coverage is available and what rules apply. Here is a quick decision framework:

1. Identify age and status first. Are you under 19? Pregnant? Age 65+? Do you have a qualifying disability? These facts determine which category applies before income is even calculated.
2. Check whether your state expanded Medicaid. For non-disabled adults aged 19–64, expansion status determines whether a pathway exists at all. If your state has not expanded, you may be looking at a very narrow eligibility window or none at all.
3. Look up your state's income limit for your category. Federal minimums are the floor, not the ceiling. Many states have raised limits, particularly for children and pregnant women.
4. If you are elderly or disabled, factor in assets. Income alone will not determine your eligibility. Asset tests, spend-down rules, and waiver availability all matter.
5. Apply through the right channel. Most applicants can apply through their state Medicaid agency, through HealthCare.gov (which screens for Medicaid), or through a local enrollment navigator.

Medicaid enrollment can also intersect with other qualifying life events that open special enrollment windows for Marketplace coverage. If you lose Medicaid eligibility, that event triggers a special enrollment period — more on that topic is available in the special enrollment hub. And if you are curious about which services Medicaid actually covers once you are enrolled, the what's covered hub breaks down benefits across plan types.

Rules change. State legislatures and Medicaid agencies update income limits, optional benefits, and eligibility standards regularly. Always verify current thresholds directly with your state Medicaid agency or through Benefits.gov before making coverage decisions.